MEDIUM
CVE-2022-35256
CWE-444Published: December 5, 2022· Updated: Jun 17, 2026
6.5
CVSS v3.1
Official Description
The llhttp parser in the http module in Node v18.7.0 does not correctly handle header fields that are not terminated with CLRF. This may result in HTTP Request Smuggling.
Technical Analysis
CVE-2022-35256 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Affected Vendors & Products
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (6)
→
https://cert-portal.siemens.com/productcert/pdf/ssa-332410.pdfThird Party Advisory
→
https://hackerone.com/reports/1675191Exploit · Issue Tracking · Third Party Advisory
→
https://www.debian.org/security/2023/dsa-5326Third Party Advisory
→
https://cert-portal.siemens.com/productcert/pdf/ssa-332410.pdfThird Party Advisory
→
https://hackerone.com/reports/1675191Exploit · Issue Tracking · Third Party Advisory
→
https://www.debian.org/security/2023/dsa-5326Third Party Advisory
Quick Facts
CVE IDCVE-2022-35256
CVSS Score6.5 / 10
SeverityMEDIUM
WeaknessCWE-444
CISA KEVNo
Affected4 vendor(s)
PublishedDec 5, 2022
Related CVEs (CWE-444)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2022-35256 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.